Patent application number | Description | Published |
20090173500 | Method and Apparatus for Well Treatment - A well treatment tool, comprising: a tool body; a clamping system for locating the tool body in a well; a positioning system for orienting the tool body in the well axially and azimuthally; a reservoir system comprising at least one fluid reservoir in the tool body; and a pumping system for pumping fluid from the reservoir to a region of the well to be treated. The treatment tool can also re-established the isolation performance of the casing, when modified (by drilling) for the treatment. The treatment tool is normally conveyed and controlled via the mean of an electrical wireline cable. | 07-09-2009 |
20090220367 | ROTARY PUMP - The claimed invention relates to rotary pumps. The claimed rotary pump comprises: an hollow housing having a side wall and end-face walls; a shaft rotatably positioned in the housing essentially in parallel with the side wall, the distance between the housing side wall and the shaft is variable; deformable rollers that are arranged and adapted to move, when the shaft rotates, between the housing side-wall and the shaft, while moving their deformation being maximal in the region of the minimal distance between the housing side-wall and the shaft; and sealed cavities, each of which cavities being defined by two contiguous rollers, the housing's side wall and end-face walls; the sealed cavities being adapted to communicate with the suction port as their volume increases, and communicate with the delivery port as their volume decreases. The technical result: an enhanced delivery capacity—with simultaneous decrease in dimensions and mass; an improved cost-effectiveness, extended longevity and more simple operation. | 09-03-2009 |
20100230089 | DOWNHOLE SYSTEM AND AN IMMERSION HYDRAULIC MACHINE FOR EXTRACTION OF FLUIDS - The claimed invention relates to the downhole systems for extracting various fluids, in particular—for simultaneous extraction out of a number of producing formations. The inventive downhole system comprises a casing pipe and a tubing extending through said casing pipe, between which pipe and tubing formed are separate isolated cavities. Each one of which cavities communicates, via perforations, with a respective producing formation. In each one of the isolated cavities, to the tubing coupled is a hydraulic machine comprised by a motor and pump. The hydraulic machines in different isolated cavities being adapted to be adjusted independently. This system permits simultaneous extraction of fluids out of different producing formations, with independent controlling of such extraction in various formations. The claimed invention also relates to an immersion hydraulic machine used for extracting fluids. | 09-16-2010 |
20110027110 | OIL FILTER FOR DOWNHOLE MOTOR - A method of controlling operation of an ESP, comprising determining at least one operating speed (rpm) at which the ESP experiences unacceptable levels of lateral vibrations; and applying a periodic modulation to the operating speed when operating the pump at the determined speed to damp the lateral vibrations. | 02-03-2011 |
20110061937 | WELL CONSTRUCTION USING SMALL LATERALS - This invention relates to the construction of well such as oil and gas wells using techniques based on drilling small lateral wells from a main well. The problem of narrow pressure window is solved by the use of constructions techniques that are based on the use of lateral boreholes, i.e. secondary boreholes that are drilled a main borehole, wherein a method of constructing a well comprises drilling a main borehole extending from the surface through one or more underground formations, drilling a plurality of lateral boreholes extending from the main borehole into surrounding formations, wherein the lateral boreholes are substantially shorter and of smaller diameter than the main borehole; and wherein each lateral borehole is separated from its neighbouring lateral boreholes by a relatively short distance. Drilling of the lateral boreholes can be for to extend 5-60 metres from the main borehole with a diameter in the range 3.8-10 cm by the lateral boreholes at an axial spacing of less than a few metres in the main borehole. Drilling of more than one lateral borehole can be done at the same depth in the main borehole with a trajectory that deviates from the main borehole by less than 10° or with trajectories that extend in a plane that does not contain the main borehole. | 03-17-2011 |
20110097223 | OIL FILTER FOR DOWNHOLE MOTOR - An oil filter for use in an electric motor forming part of a downhole device such as an ESP, comprising a two-part filter including a first part formed from a porous material which acts to filter solid particulate material from the motor oil, and a second part comprising a sorbent for removing aqueous liquids from the motor oil. | 04-28-2011 |
20110120778 | DRILLING TOOL - A drilling tool that has a flexible shaft so as to be able to make short radius curves while still being able to transmit torque and axial loads. The drilling tool includes a drill shaft for transmitting axial load, comprising a series of coaxial ring members connected together such that adjacent ring members are flexible in an axial plane relative to each other; each ring member being connected to an adjacent ring member by connecting member arranged to transmit torque therebetween; and axial supports extend between adjacent ring members so as to transmit axial loads therebetween. | 05-26-2011 |
20110150686 | PROGRESSIVE CAVITY HYDRAULIC MACHINE - This invention relates to machine-building, more specifically, to the design and manufacturing of positive displacement motors various embodiments of which are used for hydrocarbon production. | 06-23-2011 |
20120001506 | COMMUTATION SYSTEM FOR A DC MOTOR - A commutation system for a DC motor having a stator including a plurality of windings and a permanent magnet assembly, the assembly comprising: | 01-05-2012 |
20130017075 | Electrical Submersible Pump - An electrical submersible pump can include a housing with a head and a base; a shaft arranged for rotation within the housing; an impeller stack that includes ceramic impellers mounted along the shaft; a diffuser stack that includes diffusers disposed within the housing; and a spring sleeve that includes axially spaced and overlapping tangential slots, the spring sleeve mounted along the shaft to apply a compressive force between the shaft and the impeller stack. Various other devices, systems, methods, etc., are also disclosed. | 01-17-2013 |
Patent application number | Description | Published |
20100314119 | APPARATUS AND METHODS FOR WELL-BORE WALL SURFACE FINISHING - An apparatus for modifying the wall surface of a borehole drilled through an underground formation. The apparatus comprises a tool body that can be introduced into the borehole using a conveyance system so as to be moveable along the borehole, and one or more members arranged so as to be able to be urged against, and moved across at least part of the borehole wall in order to work the surface thereof and modify its properties. A method of modifying the wall surface comprises positioning the tool body in the borehole at a location of interest using the conveyance system, urging the members against the borehole wall with sufficient force to modify the properties of the surface thereof, and moving the members across the surface of the borehole wall. | 12-16-2010 |
20110088951 | DUAL BHA DRILLING SYSTEM - The invention relates to apparatus and methods useful for drilling lateral boreholes into a formation surrounding a main borehole. Proposed technique can be used for drilling of laterals which does not require such significant interruptions to deploy the small BHA and is based on the use of a drilling apparatus, comprising a drill collar forming part of a primary drilling assembly and having an outward opening groove in the side thereof, a secondary drilling assembly, comprising a tubular drill string connected at one end to the drill collar, a drilling motor mounted in the drill string, a drill bit mounted at the other end of the drill string and connected to the drilling motor, wherein the secondary drilling assembly is mounted in the drill collar so as to be movable between a first position in which the drill bit is seated in the groove, and a second position in which the bit projects laterally from the groove in the side of the drill collar. | 04-21-2011 |
20120160571 | DRILLING TOOL - A drilling tool that has a flexible shaft so as to be able to make short radius curves while still being able to transmit torque and axial loads. The drilling tool includes a drill shaft for transmitting axial load, comprising a series of coaxial ring members connected together such that adjacent ring members are flexible in an axial plane relative to each other; each ring member being connected to an adjacent ring member by connecting member arranged to transmit torque therebetween; and axial supports extend between adjacent ring members so as to transmit axial loads therebetween. | 06-28-2012 |
20140169127 | Data Processing Systems and Methods for Downhole Seismic Investigations - Methods and systems for investigating a formation surrounding a wellbore. The methods involve a semblance-based analysis of downhole data, for example low frequency downhole data. The semblance-based analysis includes group semblance mapping of the data, followed by single shot semblance map handling, followed by multiple shot data handling. The systems include a seismic source, a seismic receiver, and an electronics system for processing data according to a process including: group semblance mapping, single shot map handling, and multiple shot data handling. The seismic source may generate low frequency signals, and the seismic receiver may be two or more receiver subsystems that include at least two axially spaced-apart hydrophones and at least one multi-component geophone. | 06-19-2014 |
20140169128 | Devices, Systems and Methods for Low Frequency Seismic Borehole Investigations - Downhole seismic sources that may be compatible measurement-while-drilling systems. The downhole seismic sources are integrated into drill string components, including drill collars of the bottom hole assembly. The downhole seismic sources may generate a low swept frequency signal suitable for imaging around the drill-string and ahead of the drill bit. Integrated downhole seismic systems including a downhole seismic source, receivers and optionally data processing capabilities. The integrated systems may be configured to determine the distance and orientation of bed boundaries, including ahead of the drill bit up to about 200 m to 500 m in depth. Methods for downhole seismic, including single well and cross-well seismic. The methods may include obtaining seismic information ahead of the drill bit. | 06-19-2014 |
20140169129 | Downhole Receiver Systems and Methods for Low Frequency Seismic Investigations - Downhole seismic receiver systems that may be compatible with measurement-while-drilling systems. The downhole seismic receiver systems may be integrated into drill-string components, including drill collars of a bottom hole assembly. The downhole seismic receiver systems include one or more receiver subsystems which in turn include at least two or more same-type seismic sensors. The downhole seismic receiver systems are compatible with low frequency seismic sources and may be useful in determining orientation and location of bed boundaries around a wellbore and ahead of a drill-bit. The downhole seismic receiver systems can be operated with a downhole or surface source. Methods for downhole seismic, including single well and cross-well seismic. The methods may include analyzing data acquired by the receiver systems to obtain seismic information around the wellbore and ahead of the drill bit. | 06-19-2014 |
Patent application number | Description | Published |
20110247881 | INTELLIGENT CONTROLLED PROCESS FOR WELL LATERAL CORING - A system for coring an underground formation surrounding a borehole, comprising: a tool body that can be positioned in the borehole near the formation to be cored, the tool body including a motor; a rotary drive head connected to the motor; a rotary tool connected to the rotary drive head and one end and carrying a drill bit at the other end; a drive mechanism including an operable anchor for anchoring in the borehole and an axial drive for advancing tool body and the rotary tool; and a guide for urging the rotary tool laterally from the borehole into the surrounding formation; wherein the rotary tool is a tubular coring tool conveying an annular drill bit. | 10-13-2011 |
20130307266 | Oil-Well Tubular Anchoring System for Lwd/Mwd Tools - An anchoring assembly in a downhole tool, the assembly including a first tubular member, a second tubular member coupled to the first tubular member, and an anchoring block disposed between the first tubular member and the second tubular member. The anchoring block includes a body having a central axis defined therethrough and a central bore formed therethrough, a contact crown, in which at least one annular flow channel is formed between the contact crown and the body, and a contact ring configured to engage at least a portion of the first tubular member. | 11-21-2013 |
20130314092 | Sensing The Magnetic Field of The Earth - A magnetometer includes a sensor housing having an internal bore formed therethrough and a magnetic field sensor disposed within the internal bore of the sensor housing. The magnetic field sensor is fixedly mounted within the internal bore of the sensor housing. A magnetic flux concentrating block is disposed proximate to an end of the at least one magnetic field sensor. An electronics unit is disposed within the internal bore of the sensor housing and is operatively and communicatively connected to the magnetic field sensor. The electronics unit is configured to receive a signal from the magnetic field sensor. | 11-28-2013 |